Home / 28,381,823.40-42,572,735.10-12,456,575.40

Finding the Fourth Proportional to 28,381,823.40, 42,572,735.10 and 12,456,575.40

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Solution

The fourth proportional to 28,381,823.40, 42,572,735.10 and 12,456,575.40 is: 18,684,863.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,381,823.40 : 42,572,735.10 = 12,456,575.40 : x
  2. Step 2: Convert to fraction form
    28,381,823.40/42,572,735.10 = 12,456,575.40/x
  3. Step 3: Cross multiply
    28,381,823.40x = 42,572,735.10 × 12,456,575.40
  4. Step 4: Simplify right side
    28,381,823.40x = 530,310,484,757,376.56
  5. Step 5: Solve for x
    x = 530,310,484,757,376.56/28,381,823.40
  6. Step 6: Final answer
    x = 18,684,863.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.